# Copyright (c) 2017 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""Test the -uacomment option."""

import re

from test_framework.test_framework import BitcoinTestFramework
from test_framework.test_node import ErrorMatch
from test_framework.util import assert_equal


class UacommentTest(BitcoinTestFramework):
    def set_test_params(self):
        self.num_nodes = 1
        self.setup_clean_chain = True

    def run_test(self):
        self.log.info("test multiple -uacomment")
        test_uacomment = self.nodes[0].getnetworkinfo()["subversion"]
        assert_equal(test_uacomment[-12:-2], "testnode-0")

        self.restart_node(0, ["-uacomment=foo"])
        foo_uacomment = self.nodes[0].getnetworkinfo()["subversion"][-17:-2]
        assert_equal(foo_uacomment, "testnode-0; foo")

        self.log.info("test -uacomment max length")
        self.stop_node(0)
        expected = (
            r"Error: Total length of network version string \([0-9]+\) exceeds maximum"
            r" length \(256\). Reduce the number or size of uacomments."
        )
        self.nodes[0].assert_start_raises_init_error(
            [f"-uacomment={'a' * 256}"], expected, match=ErrorMatch.FULL_REGEX
        )

        self.log.info("test -uacomment unsafe characters")
        for unsafe_char in ["/", ":", "(", ")", "₿", "🏃"]:
            expected = (
                r"Error: User Agent comment \("
                + re.escape(unsafe_char)
                + r"\) contains unsafe characters."
            )
            self.nodes[0].assert_start_raises_init_error(
                [f"-uacomment={unsafe_char}"], expected, match=ErrorMatch.FULL_REGEX
            )


if __name__ == "__main__":
    UacommentTest().main()
